Threshing apparatus with vertical drum



Aug. 7, 1934. A. cLAAs Er AL 1,969,639

THRESHING APPARATUS WITH VERTICAL DRUM Filed Nov. 6, 1953 2 Sheets-Sheet l mus/mm Van-rim 5W 9 '7, 1999. A. CLAAS Er AL 1,999,639

THRESHING APPARATUS WITH VERTICAL DRUM Filed Nov. 6, 1933 2 Sheets-Sheet 2 Patented Aug. 7, 1934 immune APPARATUS -WIITH :VERTICAL 1 .;DBUM'-"l' i Q 1 August Claas and 'Walter Gustav Brenner,

' flarsewinkeL Germany ApplicationflNoveinber 6, nisajseriai Nmtsasss 1 Q. .i I nnanrhfih 1331 fis Claims. (Cl. 56123) This invention relates to a-feeding and delivering apparatus for threshing machines'with Ver tical drum to the two admission apertures of which the stalks are'fed' parallel to the drum axis. i The invention consists chefiy in that for" feeding the'stalks to the drum a; feeding device is used which supplies the stalks with the ears hanging downwards to the admission aperture of the threshing device. The front portion of this feedlO ing device is so constructed'and arranged that it grips the stalks lying ona horizontal. platform near the stubble end and brings the stalksuout of the horizontal 'into the verticalposition.

- Further, an endless conveyor is, according to 15 the-invention, arranged behind the vertical drum and grips the stalks leaving the threshing device and conveys the same 'inz'hanging position to '.a

dumping place. The feeding devicesimay consist of known end- 20 less conveyor bands or cloths}:- 1 Endless" conveyor chains are, "however, particularly advantageous which are guided at the ends over sprocketiwheels, and the links of 'whichare provided? with grip-- pers. These grippers 'open' when the cliainruns over the sprockets, .gripithe-stalks'andclose when the chain. stretches, the stalksbeingfgrippedby the grippers and conveyed to theLthreshing-de- Moreovendevices aretprovidedwhich push the stalks laterally out of the closed gripper cheeks at the dumping place, these devices being arranged either rigidv or adjustable'relativeto;the conveyor chains. The invention therefore rrelates also'to the special constructions of .these devices. L

The invention may beemployedior stationary threshing and alsofor threshing during harvests m :j Various advantages resulting from theemploy ment' of'the invention are obtained. The cereal stalks are stretched by the weight of theears so that the stalks, for thepurpose of red ucing the p w consumption, a e on s rtl -isubie i known manner to the'threshing operationg -that is guided through the threshing device. f Further 5 the screen of stalks hanging from the endless conveyor can ,bebrought without difficulty to the threshing device into Y the, proper position, that is a l t and w the rg t n Q the drum axis. Thus, anf adaptation ofthe actual height of the crop; that is correspending togthe actual lengthof the stalksQcari be attained} The chief advantage of the present manner of feeding to and discharging after the threshingz is th at the grains can easily dropoutiof, thestalk screen 5 andthe downwardly hanging ears, and'thatfthe grains, ;whi ch are thrown out of the drum during'thethreshin'g, are caught so that they do not as hitherto, comeinto contact with the straw passing out of thedrum. Consequently, the arrangelnent of a straw jigger behind the existing threshing device is not necessary, but merely a conveyor chain is, required which conveys the stalks inhanging positionfrorn the drum to the Finally, it is [possible ,by the feeding of the 66 stalks in hangingposition to employ a shorter because,- .in;.the case of long crop, the lower portion of the stalks can lag slightly behind without causing clogging or ,the like. The employmentlof. a shorter;-drum, however, results in a 70- lower Ipower ponsumption and lighter weight of fi YiWQ V. r

An embodiment of the invention is illustrated V by wayof exa v ple in}the accompanying drawings in. h:-.-..--

Y Fig-. l'is a diagrammatic view showing the op-; e r omhw re m Yi i Fig. 2; ,shows diagrammatically in side elevation the employment 'of the threshing, device for a combined harvester and threshing machine and 3 isa top plan'view ofFig." 2, the known parts of the machine not forming part of the Yen iQn -b ins te Fig. 4 shows in top plan view'the feeding disc constructedas gripper chain and which feeds the talks -Qihet s s m: r Fig. 5; isasection online V-V of Fig. 4, i

isasection on line V I-VI of Fig. 4. Fig,;7 shows inside elevation the feeding devicebringing the stalks into vertical position. i Fig.8 is a frontelevation of Fig. 7.

- Fig. 9 is a seetion on line IXIX of Fig. 8.

Fig-1O shows a portion of the gripper chain in Pe s ti Y QW- ;Figs.- 11.;and 1 show diagrammatically the driving-of the several moved-parts of. the machine.

1 As-gshownin-Fig 1 a' horizontal platform -1 is' formed byan endless conveyor band guided over rollers; The stalks 1-2 are spread on.;cr drop 10c duringfthe, mowing; on to-this conveyor band. They are/then fedby the conveyor band to a laterally arranged gripper 3 which, according to the invention; grips-the lower half of the stalks and lifts same with the ears hanging downwards and securely holds them in this position, gripper 3 delivers the stalks to a feeding device l which feeds them to the admission:- aperture of the threshing drum 5 in vertical position with the ears hanging down- I wards. The threshed stalks are then gripped on leaving the drum by another conveyor '7 and thrown out at the rear in swaths.

A harvesting and threshing machine operatband 14 which feeds the stalks 2 lying thereon gripper chain 17' runningoverf these sprocket ing rollers 25. H v g Each linkof the chain-1'7carrisa laterally 1 .0"

through the intermediary of a cylinder 15 (Fig. 8) to the lower end of an endless gripper chain 17 extending upwards in a curve. A curved bar 18 of U-shaped cross section serves v as bearing and guide for this endless chalnyandithe upper end of this bar is connected with anadjusting strap 19 by a hinge 20, whereas its alowerend' rests on a supporting tube 2lmounted on the frame 10; Sprocket wheels 22' and 23' are -mounted onthe inner side of :thecurved bar one'atthe top and the other at the bottom, the

wheels. The upper sprocket "wheel 22 is driven by a Cardan shaft '24; In order to guide the chain 1'7 in a curve the hinge bolts of the chainare directed towards the'*centre of this curve. (Fig. 10). The gripper chain 17; is supported by'rollers 25 the axles of which'are fixed on the curved bar 18*by intermediate'eleinents' 26. 1'0 reliably guide the chainsmallangle-pieces' 2'? are fixed on the inner connecting straps'22-of the'chain I links; the ends of saidangle-pieces being only a relatively shortdistance' apart so'that, when'the chain-is stretched, they form a continuous curved bar which engages in the grooves of the suppojrtprojecting gripper 17a. The individual grippers, whenthe chain isst'retched, are side by side in close proximity. They spread, however, when th'e'chain runs over the sprocket-wheels." The lower sprocket'wheel 23 is arranged; beside "the roller 15 nearthe'cutting mechanism 8; so'that the grippers l'l open, when they run around the lower-sprocket wheel 18 (Fig; 8),gripf'the stalks and lift'the same-so that they'hang downwards from the upper bight of the chain wl'th"the"ears directed downwards. r i

By oscillating the strap 19 the whole gripper chain l'? and therefore the gripping point can be adjusted relative to the cutting'mechanism and the machine'adapted to the diil erentkinds of cereals, lengths of stalks and local conditions.

The stalks brought into ;vertical position by the gripper chain ll are removed from the chain by a stripper 27 and fed to the conveyingdevice 4.

This conveying device, which is 'arranged at the side ofthe tractor 13, may consist of known endlessgbands er" belts (Fig.1) or ofjajgripping. 7 chain 28 ;(Fig. :1). This gripper chain is mounted 'in a-bar 29 of'vfshaped cross'sectionfconducted aroundtwo sprocket wheels 30 -and"3l,j' The'ibar 29' is connected at one end with 'the str'ap'l9 by a hinge- 32 and 'shiftably mounted at the other end in a shoe 34 arranged on the frame 33 of the threshing device.

I The grippers 28a-of the chain opening on the sprocket wheel 3il remove the stalks from the gripper chain 17 and convey'them to the threshing drum fi. In order to prvent'the stalks from falling out Flaterally, the outer-ends of the grippers 28a' run along a bar 35 which-extends up to'the drum "1.

The depositing of the stalks is efiected by upwardly inclined strippers 36 arranged on theshoe 34 and extending to within close proximity to the gripper arms, said strippers pushing the stalks laterally out of the closed chain. This arrangementpresents the advantage that, even in the case of a longitudinal shifting ofthe bar 29 together with the gripper chain, the stalks are always delivered at the same point. This is important, besides forthe adjustment to differentkinds of cereals, also when the harvesting and threshing machine moves for example over undulating ground and consequently the cutting mechanism=..arranged in front of the tractor {assumes'l'diifere rit angles of inclination to the horizontal plane.

'I'heconveying device 4 or 36 may be constructed so that it is adjustable in vertical direction, ior example by fitting the shoe 34 at different heights on the threshing box. It is thus possible to make-the stalkssto extend more-.;-or less-deeply. into the; drum and. to submit them, to the threshing operation. 1

' In order to prevent any, grains from becoming lost by fallingout during the conveying of the stalks tov the threshing drum, atrough'3'7 is arranged under the conveyor 4v or 28; and prefer-- ably provided; with. a conveyor bandor the like 38' moveditowardsthe drumc The threshed' stalks f are taken up by a convey ingdevice '7 which deposits,.themg'towards the rear.:. i 1 1 This conveying 'device is preferably constructed in a similar. manner to the gripper. chain '28. The threshing'arrangementproper is of known type and therefore not'shownin detail; 'A, difference'consists only i'nathat separate jiggers are omitted. V g The: drive is effected by.:a, stub1shaft-39'ofthe tractor 13,, the rotation iof which: shaft is I transmitted bynachain drive ,40..-to a-main driving shait'41' from which the otherdrives are derived. The threshing drum isdriven from this shaft by means of. a pair of bevel wheels 42 and 'a chain drive 43: On the end of the shaft 41 a bevel wheel 43 is'keyed and meshes with two bevel wheels 44 and 4'7. The bevelwheel 44 drives through the intermediary of a Cardan shaft 45 a "sprocket wheel "46 .1 for'driving'the conveyor chain '7; "The other bevel wheel 4'! drives by means of a Cardanshaft 48 the 'sprocketiwheel 31ofthe conveyor chain 28. I a A counter shaft 49 is also journalled in'the frame 10 and rotated-from the shaft 41 through the intermediary or a Cardan shaft 50. The knife drive'is derived from theshaft 49 by means of a crank drive. Moreover, the driving of the movable'bottom 38-013 the collecting trough'37 is effected by a pair of bevel wheels 51 and 52 and the shaft 2'4 for drivinglthe gripper chain is tionfwitha-vertical drum having an admission TIE aperture, an endless feeding device adapted to feed the stalks to the aperture of the drum parallel to the axis thereof, with the stalks in vertical position with the ears hanging downwards;

2. A threshing device as specified in claim 1, in which the feeding device is so narrow that it only grips the stalks on a short length and feeds them to the threshing drum in freely hanging position.

3. A threshing device as specified in claim 1, comprising in combination with the threshing drum and the feeding device, a trough under said feeding device adapted to catch any falling grains and ears, and a conveyor band in said trough travelling towards said threshing drum.

4. In a threshing device as specified in claim 1, the feeding device comprising in combination an endless gripper chain, sprocket wheels guiding said endless chain, and grippers projecting la erally from the individual links of said chain adapted to tightly clamp in the stretched position of the chain the straw stalks and to open for gripping the stalks when running over the foremost of said sprocket wheels.

5. A threshing device as specified in claim 1, comprising in combination with the feeding device, including a gripper chain with grippers projecting laterally therefrom, a guide bar extending along the path of movement of the ends of said grippers, and adapted to prevent the stalks from dropping out laterally from said grippers.

6. A threshing device as specified in claim 1, comprising in combination with the feeding device, including a gripper chain with grippers projecting laterally therefrom, an upwardly inclined stripper extending to within close proximity to said grippers adapted to push the stalks laterally out of the closed chain.

'7. A threshing device as specified in claim 1, comprising in combination with the drum and the feeding device, means for adjusting said feeding device parallel to the axis of said drum.

8. A threshing device as specified in claim 1, comprising in combination with the feeding device, a horizontal platform, and an endless gripper adapted to grip stalks lying on said platform and to supply them to said feeding device in vertical position with their ears directed downwardly- 9. A threshing device as specified in claim 1, comprising in combination with the feeding device, a horizontal platform, an endless gripper including an upwardly curved gripper chain, adapted to convey the stalks from said platform to said feeding device, and hinge pins of said chain directed towards a common centre in the curve along which the chain travels.

10. A threshing device as specified in claim 1,

comprising in combination with the feeding device, a horizontal platform, an endless gripper including an upwardly curved gripper chain, adapted to convey the stalks from said platform to said feeding device, hinge pins of said chain directed towards a common centre in the curve along which the chain travels, and supporting rollers adapted to support the underside of said chain.

. 11. A threshing device'as specified in claim 1, comprising in combination with the feeding device, a horizontal platform, an endless gripper including an upwardly curved gripper chain, adapted to convey the stalks from said platform to said feeding device, hinge pins of said chain directed towards a common centre in the curve along which the chain travels, supporting rollers adapted to support the underside of said chain, straps connecting the links of said chain, angle bars fitted on said chain abutting at their ends,

' to form a continuous curved guide bar. adapted to support said rollers.

12. A threshing device as specified in claim 1, comprising in combination with the drum having a delivering aperture, an endless conveying device arranged behind the delivering aperture of said drum adapted to grip the stubble ends of the stalks leaving said drum and to convey the same to dump with their ears directed downwardly.

13. A threshing device as specified in claim 1, comprising in combination with the feeding device, a tractor carrying the threshing device at its rear end, and a platform with cutting mechanism in front of said tractor, said feeding device arranged laterally of said tractor extending from said platform to said threshing device.

14. A threshing device as specified in claim 1, comprising in combination with the feeding device, a tractor carrying the threshing device at its rear end, a platform with cutting mechanism in front of said tractor, said feeding device arranged laterally of said tractor extending from said platform to said threshing device, and means for mutually adjusting said feeding device and said cutting mechanism.

15. A threshing device as specified in claim 1, comprising in combination with the feeding device including a conveyor chain, a tractor, a threshing drum at the rear end of said tractor, a platform with cutting mechanism in front of 125 said tractor, fixed relative to said drum, strippers adapted to push the stalks off said conveyor chain, and means for longitudinally shifting said chain relative to said strippers.

AUGUST CLAAS. WALTER GUSTAV BRENNER. 

